Improvement in fog-alarms



2 Sheets--Shee 1. 'SAMIMLGl CABEU..

Fog Alarm.

Patnted August 8, 1871.

4.752 #en 501' f 57, 9i CML@ 1.,/ /f Mmm IMQ J UNITED STATES PATENT OFFICE.

SAMUEL G. OABELL, OF QUINOY, ILLINOIS, ASSIGNOR TO HIMSELF AND GEORGE I). ESTE, OF WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN FOG-ALARMS.

To all whom it may concern:

Be it known that I, SAMUEL G. OABELL, of Quincy, in the county of Adams and in the State of Illinois, have invented certain new and useful Improvements in Fog-Signals; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon making a part of this speciiication.

The nature of my invention consists in a fogsignal or alarm, in which one or two cylinders, a horn, and a piston are used, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the saine, I will now proceed to describe its construction and operation, referring to the annexed draw-ing, in which- Figure l*L is a longitudinal vertical section, showin g one cylinder working outside of another and a piston workin g in the inside cylinder. Fig. l1J is an end view of Fig. la. Fig. 2al is a longitudinal vertical section, showing a piston working in a single cylinder. Fig. 2l is an end view of the cylinder in Fig. 2a. Fig. 3 is a longitudinal vertical section, showing a modification of- Fig. lf. Fig. 4 is a side view, showing still another modification.

A represents a cylinder, closed at one end by means of a head and stuffing-box, a, through which the piston-rod B passes. At a suitable distance from the other end, within the' cylinder A, is a partition, C, in which the reed D of the horn is screwed. This endof the cylinder should extend so far beyond the partition C that when the horn is inserted the end of the cylinder and sides of the horn will form a close joint. On the inner side of the partition C is attached the apex of a cone, E, surrounding the reed D, and the sides of said cone are attached to the sides of the cylinder A below the end of the reed. This cone collects the air and drives it toward the reed at the same time as it acts as a stop for the piston, preventing the same from coming in contact with and injuring the reed. Surrounding and moving up and downv on the cylinder A is another cylinder, G, closed at its outer end, and provided at said end with an inwardly-opening air-valve, b. The inner end ofthe outer cylinder G is, by a stuffing-box, d, kept tight with the outside of the inner cylinder A. The outer end of the cylinder G is provided with a handle, H, and the piston-rod B is attached to this end of said cylinder in the center. The piston-rod B, as above mentioned, passes through the stufngbox a., and is, within the cylinder A, provided with a piston, L. The rod B is hollow, and provided with one or more elongated slots, e, near its outer end, so that the air from the cylinder G can pass through the piston-rod into the cylinder A.

When the cylinder G is drawn out the piston L is drawn at the same time to the outer end of the inner cylinder A. The piston draws air into the inner cylinder through the horn, while the valve b admits air into the outer cylinder G. When this cylinder is now pressed inward the air in the inner cylinder, together with the air from the outer cylinder passing into the former through the piston-rod, becomes compressed and sounds the horn.

This principle may be applied in a number of ways, some of which I have shown in the drawing; all, however, involving my main feature, namely, one or more cylinders, a horn, and a piston.

In Fig. 2 I have shown a single cylinder, A1, with reed D and cone E. The outer or lower end of this 'cylinder is open, and a piston, L, works in the same. The piston-rod B1 is solid, and attached to a handle, H1. From this handle rods f pass down through tubes h h attached longitudinally on the outside of the cylinder A1. These rods act as guides for the piston, and the tubes strengthen the cylinder.

In Fig. 3 Phave shown a cylinder, A2, with reed D and cone E. Inside of this cylinder works another cylinder, G2, closed at its inner end, with an air-passage, b2, through the same. Within the cylinder GZ moves the piston L and pistonrod B2 attached to a handle, H2. In this case the piston and cylinder G2 work independently of each other, and this cylinder is filled with air from the cylinder A2 through the passage b2.

In Fig. 4 I have shown still another modification. A3 is the cylinder, with piston L and rod B passing through a cap or stuffing-box on the end. At the other end of the cylinder is a twoway cock, I, with a rubber bulb or other airchamber, J, on the end. Above this is a bell or inverted cone-shaped piece, K, in which the reed tially as and for the purposes set forth.

of the horn is screwed. The eoek I is turned so that, by drawing1 the piston, the bulb J will he filled with air; then shut oil' the eoel; and push in the piston; and, whenever necessary to sound the alarm, only turn the eoek, when the eonipressed air in the bulb will sound the alarm.

Havin g thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination herein shown, in a fogalarm, of one or more air-cylinders, a reed, horn, and a piston-head working in the Cylinder or ey]- ders, substantially as and for the purposes set forth.

2. The combination of the two cylinders A and G, piston-rod B, and piston L, and an air-valv 1., b, arranged in the head of the Cylinder, substan- 3. In combination with the air-cylinder in a fogalarm provided with a reed operated upon by a piston, the cone E, under the arrangement shown, for protecting the mouth-piece and braein g the cylinder, substantially as herein set forth.

4. In Combination with the air-Cylinder A1 provided with its exterior tubes l1., eone E or its equivalent, and reed D, the piston-rod B1, piston L, and guide-rods f, all substantially as and for the purposes herein set forth. y

5. rlhe eon'ibination of the outer cylinder A2, provided with reed D and eone E or its equivalent, the interior Working cylinder G2 having; a piston-head and air-passage, b2, on its inner end, and the piston-rod B2 with piston L, all substantially as and for the purposes herein set forth.

`6. In combination with the Cylinders A and G, eoilstrueted substantially as described, the hollow piston-rod B provided with openings e, and piston L, substantially as and for the purposes herein set forth.

7. The combination, in a fog-signal, of an aireylinder, A3, piston-rod D", piston L, flexible airbulb J, regulating-Cock I, and a chamber inelosing a reed, D, connected with a horn, all substantially as and for the purposes herein set forth.

In testimony that I Claim the ioregoing I have hereunto set my hand this 21st day ot' July, '1871.

S. Gr. CABELL.

Witnesses:

(J. L. EVERT, A. N. MARR. 

